Switching system, method and device of electric power data

Abstract

The invention provides a switching method of electric power data. The method comprises the following steps of: A. measuring an electric power physical quantity; B. collecting, communicating and uploading data; and C. receiving the uploaded data at a main station. The method is characterized by further comprising a data switching step D between the step of measuring the electric power physical quantity and the step of collecting and uploading data, including the procedures as follows: D1, judging whether the collected kth time sampled effective value Ik, Uk or Pk is in a stable state or a temporary state, and giving out a judging mark F, wherein F=1 is a temporary state, and F=0 is a stable state; D2, if F=0, solving the average value of the sampling value, if F=1, outputting assigned value to a numeric value which is impossibly achieved, and when F is changed from 1 to 0, resetting the average value as zero and setting k=1; and D3, re-sampling according to the given frozen moment, outputting the stable state value, and when the uploaded data received by the main station in the step C are equal to impossible numerical value, deleting the uploaded data. The invention further provides a corresponding device. By using the switching system, method and device, the data transmitting quantity can be reduced, the transmitting precision can be increased, and the existing electric power automation system can be easily reconstructed to solve the problem that the remote measured data are mixed in the temporary state data.

Description

technical field [0001] The invention relates to electric power measurement and data collection technology, especially a system, method and device for electric power data collection. Background technique [0002] In power consumption automation (such as power consumption information system, intelligent power consumption), the electric energy meter completes the measurement of power physical quantities (including current, voltage, active power, reactive power, active power energy and reactive power, etc.), and the distribution transformer terminal Complete data collection and upload to the master station. The sampling time interval Δ in the electric energy meter is very small, less than 100 microseconds, and the sampling interval of the distribution transformer terminal is 1 minute at the fastest, and the fastest interval between the distribution transformer terminal and the master station is 15 minutes in China and 15 minutes in foreign countries. 5 minutes. After the maste...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for power data conversion, reduce the amount of data transmission, improve transmission accuracy, and easily transform the existing power automation system to solve the problem of telemetry data mixed into transient data

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